SGP/MET/E15 - Temperature/humidity sensor occasionally failed 6-month field calibration 
checks

The temperature/humidity sensor was not calibrated annually during this time. The 
temperature/humidity readings failed the 6-month field calibration check two times during this 
period (temperature read low, humidity read high).

In general, the relative humidity may have been subject to drift during this time. The 
manufacturer characterizes sensor drift at <1% / year.

Please contact the mentor for specific information regarding the field calibration 

check results, if necessary.

• vapor_pressure_mean
• temp_mean
• rh_mean